helix.rs

   1mod boundary;
   2mod duplicate;
   3mod object;
   4mod paste;
   5mod select;
   6mod surround;
   7
   8use editor::display_map::DisplaySnapshot;
   9use editor::{
  10    DisplayPoint, Editor, EditorSettings, HideMouseCursorOrigin, MultiBufferOffset,
  11    SelectionEffects, ToOffset, ToPoint, movement,
  12};
  13use gpui::actions;
  14use gpui::{Context, Window};
  15use language::{CharClassifier, CharKind, Point};
  16use search::{BufferSearchBar, SearchOptions};
  17use settings::Settings;
  18use text::{Bias, SelectionGoal};
  19use workspace::searchable::FilteredSearchRange;
  20use workspace::searchable::{self, Direction};
  21
  22use crate::motion::{self, MotionKind};
  23use crate::state::{Operator, SearchState};
  24use crate::{
  25    PushHelixSurroundAdd, PushHelixSurroundDelete, PushHelixSurroundReplace, Vim,
  26    motion::{Motion, right},
  27    state::Mode,
  28};
  29
  30actions!(
  31    vim,
  32    [
  33        /// Yanks the current selection or character if no selection.
  34        HelixYank,
  35        /// Inserts at the beginning of the selection.
  36        HelixInsert,
  37        /// Appends at the end of the selection.
  38        HelixAppend,
  39        /// Goes to the location of the last modification.
  40        HelixGotoLastModification,
  41        /// Select entire line or multiple lines, extending downwards.
  42        HelixSelectLine,
  43        /// Select all matches of a given pattern within the current selection.
  44        HelixSelectRegex,
  45        /// Removes all but the one selection that was created last.
  46        /// `Newest` can eventually be `Primary`.
  47        HelixKeepNewestSelection,
  48        /// Copies all selections below.
  49        HelixDuplicateBelow,
  50        /// Copies all selections above.
  51        HelixDuplicateAbove,
  52        /// Delete the selection and enter edit mode.
  53        HelixSubstitute,
  54        /// Delete the selection and enter edit mode, without yanking the selection.
  55        HelixSubstituteNoYank,
  56        /// Delete the selection and enter edit mode.
  57        HelixSelectNext,
  58        /// Delete the selection and enter edit mode, without yanking the selection.
  59        HelixSelectPrevious,
  60    ]
  61);
  62
  63pub fn register(editor: &mut Editor, cx: &mut Context<Vim>) {
  64    Vim::action(editor, cx, Vim::helix_select_lines);
  65    Vim::action(editor, cx, Vim::helix_insert);
  66    Vim::action(editor, cx, Vim::helix_append);
  67    Vim::action(editor, cx, Vim::helix_yank);
  68    Vim::action(editor, cx, Vim::helix_goto_last_modification);
  69    Vim::action(editor, cx, Vim::helix_paste);
  70    Vim::action(editor, cx, Vim::helix_select_regex);
  71    Vim::action(editor, cx, Vim::helix_keep_newest_selection);
  72    Vim::action(editor, cx, |vim, _: &HelixDuplicateBelow, window, cx| {
  73        let times = Vim::take_count(cx);
  74        vim.helix_duplicate_selections_below(times, window, cx);
  75    });
  76    Vim::action(editor, cx, |vim, _: &HelixDuplicateAbove, window, cx| {
  77        let times = Vim::take_count(cx);
  78        vim.helix_duplicate_selections_above(times, window, cx);
  79    });
  80    Vim::action(editor, cx, Vim::helix_substitute);
  81    Vim::action(editor, cx, Vim::helix_substitute_no_yank);
  82    Vim::action(editor, cx, Vim::helix_select_next);
  83    Vim::action(editor, cx, Vim::helix_select_previous);
  84    Vim::action(editor, cx, |vim, _: &PushHelixSurroundAdd, window, cx| {
  85        vim.clear_operator(window, cx);
  86        vim.push_operator(Operator::HelixSurroundAdd, window, cx);
  87    });
  88    Vim::action(
  89        editor,
  90        cx,
  91        |vim, _: &PushHelixSurroundReplace, window, cx| {
  92            vim.clear_operator(window, cx);
  93            vim.push_operator(
  94                Operator::HelixSurroundReplace {
  95                    replaced_char: None,
  96                },
  97                window,
  98                cx,
  99            );
 100        },
 101    );
 102    Vim::action(
 103        editor,
 104        cx,
 105        |vim, _: &PushHelixSurroundDelete, window, cx| {
 106            vim.clear_operator(window, cx);
 107            vim.push_operator(Operator::HelixSurroundDelete, window, cx);
 108        },
 109    );
 110}
 111
 112impl Vim {
 113    pub fn helix_normal_motion(
 114        &mut self,
 115        motion: Motion,
 116        times: Option<usize>,
 117        window: &mut Window,
 118        cx: &mut Context<Self>,
 119    ) {
 120        self.helix_move_cursor(motion, times, window, cx);
 121    }
 122
 123    pub fn helix_select_motion(
 124        &mut self,
 125        motion: Motion,
 126        times: Option<usize>,
 127        window: &mut Window,
 128        cx: &mut Context<Self>,
 129    ) {
 130        self.update_editor(cx, |_, editor, cx| {
 131            let text_layout_details = editor.text_layout_details(window);
 132            editor.change_selections(Default::default(), window, cx, |s| {
 133                if let Motion::ZedSearchResult { new_selections, .. } = &motion {
 134                    s.select_anchor_ranges(new_selections.clone());
 135                    return;
 136                };
 137
 138                s.move_with(|map, selection| {
 139                    let was_reversed = selection.reversed;
 140                    let mut current_head = selection.head();
 141
 142                    // our motions assume the current character is after the cursor,
 143                    // but in (forward) visual mode the current character is just
 144                    // before the end of the selection.
 145
 146                    // If the file ends with a newline (which is common) we don't do this.
 147                    // so that if you go to the end of such a file you can use "up" to go
 148                    // to the previous line and have it work somewhat as expected.
 149                    if !selection.reversed
 150                        && !selection.is_empty()
 151                        && !(selection.end.column() == 0 && selection.end == map.max_point())
 152                    {
 153                        current_head = movement::left(map, selection.end)
 154                    }
 155
 156                    let (new_head, goal) = match motion {
 157                        // Going to next word start is special cased
 158                        // since Vim differs from Helix in that motion
 159                        // Vim: `w` goes to the first character of a word
 160                        // Helix: `w` goes to the character before a word
 161                        Motion::NextWordStart { ignore_punctuation } => {
 162                            let mut head = movement::right(map, current_head);
 163                            let classifier =
 164                                map.buffer_snapshot().char_classifier_at(head.to_point(map));
 165                            for _ in 0..times.unwrap_or(1) {
 166                                let (_, new_head) =
 167                                    movement::find_boundary_trail(map, head, |left, right| {
 168                                        Self::is_boundary_right(ignore_punctuation)(
 169                                            left,
 170                                            right,
 171                                            &classifier,
 172                                        )
 173                                    });
 174                                head = new_head;
 175                            }
 176                            head = movement::left(map, head);
 177                            (head, SelectionGoal::None)
 178                        }
 179                        _ => motion
 180                            .move_point(
 181                                map,
 182                                current_head,
 183                                selection.goal,
 184                                times,
 185                                &text_layout_details,
 186                            )
 187                            .unwrap_or((current_head, selection.goal)),
 188                    };
 189
 190                    selection.set_head(new_head, goal);
 191
 192                    // ensure the current character is included in the selection.
 193                    if !selection.reversed {
 194                        let next_point = movement::right(map, selection.end);
 195
 196                        if !(next_point.column() == 0 && next_point == map.max_point()) {
 197                            selection.end = next_point;
 198                        }
 199                    }
 200
 201                    // vim always ensures the anchor character stays selected.
 202                    // if our selection has reversed, we need to move the opposite end
 203                    // to ensure the anchor is still selected.
 204                    if was_reversed && !selection.reversed {
 205                        selection.start = movement::left(map, selection.start);
 206                    } else if !was_reversed && selection.reversed {
 207                        selection.end = movement::right(map, selection.end);
 208                    }
 209                })
 210            });
 211        });
 212    }
 213
 214    /// Updates all selections based on where the cursors are.
 215    fn helix_new_selections(
 216        &mut self,
 217        window: &mut Window,
 218        cx: &mut Context<Self>,
 219        mut change: impl FnMut(
 220            // the start of the cursor
 221            DisplayPoint,
 222            &DisplaySnapshot,
 223        ) -> Option<(DisplayPoint, DisplayPoint)>,
 224    ) {
 225        self.update_editor(cx, |_, editor, cx| {
 226            editor.change_selections(Default::default(), window, cx, |s| {
 227                s.move_with(|map, selection| {
 228                    let cursor_start = if selection.reversed || selection.is_empty() {
 229                        selection.head()
 230                    } else {
 231                        movement::left(map, selection.head())
 232                    };
 233                    let Some((head, tail)) = change(cursor_start, map) else {
 234                        return;
 235                    };
 236
 237                    selection.set_head_tail(head, tail, SelectionGoal::None);
 238                });
 239            });
 240        });
 241    }
 242
 243    fn helix_find_range_forward(
 244        &mut self,
 245        times: Option<usize>,
 246        window: &mut Window,
 247        cx: &mut Context<Self>,
 248        mut is_boundary: impl FnMut(char, char, &CharClassifier) -> bool,
 249    ) {
 250        let times = times.unwrap_or(1);
 251        self.helix_new_selections(window, cx, |cursor, map| {
 252            let mut head = movement::right(map, cursor);
 253            let mut tail = cursor;
 254            let classifier = map.buffer_snapshot().char_classifier_at(head.to_point(map));
 255            if head == map.max_point() {
 256                return None;
 257            }
 258            for _ in 0..times {
 259                let (maybe_next_tail, next_head) =
 260                    movement::find_boundary_trail(map, head, |left, right| {
 261                        is_boundary(left, right, &classifier)
 262                    });
 263
 264                if next_head == head && maybe_next_tail.unwrap_or(next_head) == tail {
 265                    break;
 266                }
 267
 268                head = next_head;
 269                if let Some(next_tail) = maybe_next_tail {
 270                    tail = next_tail;
 271                }
 272            }
 273            Some((head, tail))
 274        });
 275    }
 276
 277    fn helix_find_range_backward(
 278        &mut self,
 279        times: Option<usize>,
 280        window: &mut Window,
 281        cx: &mut Context<Self>,
 282        mut is_boundary: impl FnMut(char, char, &CharClassifier) -> bool,
 283    ) {
 284        let times = times.unwrap_or(1);
 285        self.helix_new_selections(window, cx, |cursor, map| {
 286            let mut head = cursor;
 287            // The original cursor was one character wide,
 288            // but the search starts from the left side of it,
 289            // so to include that space the selection must end one character to the right.
 290            let mut tail = movement::right(map, cursor);
 291            let classifier = map.buffer_snapshot().char_classifier_at(head.to_point(map));
 292            if head == DisplayPoint::zero() {
 293                return None;
 294            }
 295            for _ in 0..times {
 296                let (maybe_next_tail, next_head) =
 297                    movement::find_preceding_boundary_trail(map, head, |left, right| {
 298                        is_boundary(left, right, &classifier)
 299                    });
 300
 301                if next_head == head && maybe_next_tail.unwrap_or(next_head) == tail {
 302                    break;
 303                }
 304
 305                head = next_head;
 306                if let Some(next_tail) = maybe_next_tail {
 307                    tail = next_tail;
 308                }
 309            }
 310            Some((head, tail))
 311        });
 312    }
 313
 314    pub fn helix_move_and_collapse(
 315        &mut self,
 316        motion: Motion,
 317        times: Option<usize>,
 318        window: &mut Window,
 319        cx: &mut Context<Self>,
 320    ) {
 321        self.update_editor(cx, |_, editor, cx| {
 322            let text_layout_details = editor.text_layout_details(window);
 323            editor.change_selections(Default::default(), window, cx, |s| {
 324                s.move_with(|map, selection| {
 325                    let goal = selection.goal;
 326                    let cursor = if selection.is_empty() || selection.reversed {
 327                        selection.head()
 328                    } else {
 329                        movement::left(map, selection.head())
 330                    };
 331
 332                    let (point, goal) = motion
 333                        .move_point(map, cursor, selection.goal, times, &text_layout_details)
 334                        .unwrap_or((cursor, goal));
 335
 336                    selection.collapse_to(point, goal)
 337                })
 338            });
 339        });
 340    }
 341
 342    fn is_boundary_right(
 343        ignore_punctuation: bool,
 344    ) -> impl FnMut(char, char, &CharClassifier) -> bool {
 345        move |left, right, classifier| {
 346            let left_kind = classifier.kind_with(left, ignore_punctuation);
 347            let right_kind = classifier.kind_with(right, ignore_punctuation);
 348            let at_newline = (left == '\n') ^ (right == '\n');
 349
 350            (left_kind != right_kind && right_kind != CharKind::Whitespace) || at_newline
 351        }
 352    }
 353
 354    fn is_boundary_left(
 355        ignore_punctuation: bool,
 356    ) -> impl FnMut(char, char, &CharClassifier) -> bool {
 357        move |left, right, classifier| {
 358            let left_kind = classifier.kind_with(left, ignore_punctuation);
 359            let right_kind = classifier.kind_with(right, ignore_punctuation);
 360            let at_newline = (left == '\n') ^ (right == '\n');
 361
 362            (left_kind != right_kind && left_kind != CharKind::Whitespace) || at_newline
 363        }
 364    }
 365
 366    pub fn helix_move_cursor(
 367        &mut self,
 368        motion: Motion,
 369        times: Option<usize>,
 370        window: &mut Window,
 371        cx: &mut Context<Self>,
 372    ) {
 373        match motion {
 374            Motion::NextWordStart { ignore_punctuation } => self.helix_find_range_forward(
 375                times,
 376                window,
 377                cx,
 378                Self::is_boundary_right(ignore_punctuation),
 379            ),
 380            Motion::NextWordEnd { ignore_punctuation } => self.helix_find_range_forward(
 381                times,
 382                window,
 383                cx,
 384                Self::is_boundary_left(ignore_punctuation),
 385            ),
 386            Motion::PreviousWordStart { ignore_punctuation } => self.helix_find_range_backward(
 387                times,
 388                window,
 389                cx,
 390                Self::is_boundary_left(ignore_punctuation),
 391            ),
 392            Motion::PreviousWordEnd { ignore_punctuation } => self.helix_find_range_backward(
 393                times,
 394                window,
 395                cx,
 396                Self::is_boundary_right(ignore_punctuation),
 397            ),
 398            Motion::EndOfLine { .. } => {
 399                // In Helix mode, EndOfLine should position cursor ON the last character,
 400                // not after it. We therefore need special handling for it.
 401                self.update_editor(cx, |_, editor, cx| {
 402                    let text_layout_details = editor.text_layout_details(window);
 403                    editor.change_selections(Default::default(), window, cx, |s| {
 404                        s.move_with(|map, selection| {
 405                            let goal = selection.goal;
 406                            let cursor = if selection.is_empty() || selection.reversed {
 407                                selection.head()
 408                            } else {
 409                                movement::left(map, selection.head())
 410                            };
 411
 412                            let (point, _goal) = motion
 413                                .move_point(map, cursor, goal, times, &text_layout_details)
 414                                .unwrap_or((cursor, goal));
 415
 416                            // Move left by one character to position on the last character
 417                            let adjusted_point = movement::saturating_left(map, point);
 418                            selection.collapse_to(adjusted_point, SelectionGoal::None)
 419                        })
 420                    });
 421                });
 422            }
 423            Motion::FindForward {
 424                before,
 425                char,
 426                mode,
 427                smartcase,
 428            } => {
 429                self.helix_new_selections(window, cx, |cursor, map| {
 430                    let start = cursor;
 431                    let mut last_boundary = start;
 432                    for _ in 0..times.unwrap_or(1) {
 433                        last_boundary = movement::find_boundary(
 434                            map,
 435                            movement::right(map, last_boundary),
 436                            mode,
 437                            |left, right| {
 438                                let current_char = if before { right } else { left };
 439                                motion::is_character_match(char, current_char, smartcase)
 440                            },
 441                        );
 442                    }
 443                    Some((last_boundary, start))
 444                });
 445            }
 446            Motion::FindBackward {
 447                after,
 448                char,
 449                mode,
 450                smartcase,
 451            } => {
 452                self.helix_new_selections(window, cx, |cursor, map| {
 453                    let start = cursor;
 454                    let mut last_boundary = start;
 455                    for _ in 0..times.unwrap_or(1) {
 456                        last_boundary = movement::find_preceding_boundary_display_point(
 457                            map,
 458                            last_boundary,
 459                            mode,
 460                            |left, right| {
 461                                let current_char = if after { left } else { right };
 462                                motion::is_character_match(char, current_char, smartcase)
 463                            },
 464                        );
 465                    }
 466                    // The original cursor was one character wide,
 467                    // but the search started from the left side of it,
 468                    // so to include that space the selection must end one character to the right.
 469                    Some((last_boundary, movement::right(map, start)))
 470                });
 471            }
 472            _ => self.helix_move_and_collapse(motion, times, window, cx),
 473        }
 474    }
 475
 476    pub fn helix_yank(&mut self, _: &HelixYank, window: &mut Window, cx: &mut Context<Self>) {
 477        self.update_editor(cx, |vim, editor, cx| {
 478            let has_selection = editor
 479                .selections
 480                .all_adjusted(&editor.display_snapshot(cx))
 481                .iter()
 482                .any(|selection| !selection.is_empty());
 483
 484            if !has_selection {
 485                // If no selection, expand to current character (like 'v' does)
 486                editor.change_selections(Default::default(), window, cx, |s| {
 487                    s.move_with(|map, selection| {
 488                        let head = selection.head();
 489                        let new_head = movement::saturating_right(map, head);
 490                        selection.set_tail(head, SelectionGoal::None);
 491                        selection.set_head(new_head, SelectionGoal::None);
 492                    });
 493                });
 494                vim.yank_selections_content(
 495                    editor,
 496                    crate::motion::MotionKind::Exclusive,
 497                    window,
 498                    cx,
 499                );
 500                editor.change_selections(Default::default(), window, cx, |s| {
 501                    s.move_with(|_map, selection| {
 502                        selection.collapse_to(selection.start, SelectionGoal::None);
 503                    });
 504                });
 505            } else {
 506                // Yank the selection(s)
 507                vim.yank_selections_content(
 508                    editor,
 509                    crate::motion::MotionKind::Exclusive,
 510                    window,
 511                    cx,
 512                );
 513            }
 514        });
 515
 516        // Drop back to normal mode after yanking
 517        self.switch_mode(Mode::HelixNormal, true, window, cx);
 518    }
 519
 520    fn helix_insert(&mut self, _: &HelixInsert, window: &mut Window, cx: &mut Context<Self>) {
 521        self.start_recording(cx);
 522        self.update_editor(cx, |_, editor, cx| {
 523            editor.change_selections(Default::default(), window, cx, |s| {
 524                s.move_with(|_map, selection| {
 525                    // In helix normal mode, move cursor to start of selection and collapse
 526                    if !selection.is_empty() {
 527                        selection.collapse_to(selection.start, SelectionGoal::None);
 528                    }
 529                });
 530            });
 531        });
 532        self.switch_mode(Mode::Insert, false, window, cx);
 533    }
 534
 535    fn helix_select_regex(
 536        &mut self,
 537        _: &HelixSelectRegex,
 538        window: &mut Window,
 539        cx: &mut Context<Self>,
 540    ) {
 541        Vim::take_forced_motion(cx);
 542        let Some(pane) = self.pane(window, cx) else {
 543            return;
 544        };
 545        let prior_selections = self.editor_selections(window, cx);
 546        pane.update(cx, |pane, cx| {
 547            if let Some(search_bar) = pane.toolbar().read(cx).item_of_type::<BufferSearchBar>() {
 548                search_bar.update(cx, |search_bar, cx| {
 549                    if !search_bar.show(window, cx) {
 550                        return;
 551                    }
 552
 553                    search_bar.select_query(window, cx);
 554                    cx.focus_self(window);
 555
 556                    search_bar.set_replacement(None, cx);
 557                    let mut options = SearchOptions::NONE;
 558                    options |= SearchOptions::REGEX;
 559                    if EditorSettings::get_global(cx).search.case_sensitive {
 560                        options |= SearchOptions::CASE_SENSITIVE;
 561                    }
 562                    search_bar.set_search_options(options, cx);
 563                    if let Some(search) = search_bar.set_search_within_selection(
 564                        Some(FilteredSearchRange::Selection),
 565                        window,
 566                        cx,
 567                    ) {
 568                        cx.spawn_in(window, async move |search_bar, cx| {
 569                            if search.await.is_ok() {
 570                                search_bar.update_in(cx, |search_bar, window, cx| {
 571                                    search_bar.activate_current_match(window, cx)
 572                                })
 573                            } else {
 574                                Ok(())
 575                            }
 576                        })
 577                        .detach_and_log_err(cx);
 578                    }
 579                    self.search = SearchState {
 580                        direction: searchable::Direction::Next,
 581                        count: 1,
 582                        prior_selections,
 583                        prior_operator: self.operator_stack.last().cloned(),
 584                        prior_mode: self.mode,
 585                        helix_select: true,
 586                    }
 587                });
 588            }
 589        });
 590        self.start_recording(cx);
 591    }
 592
 593    fn helix_append(&mut self, _: &HelixAppend, window: &mut Window, cx: &mut Context<Self>) {
 594        self.start_recording(cx);
 595        self.switch_mode(Mode::Insert, false, window, cx);
 596        self.update_editor(cx, |_, editor, cx| {
 597            editor.change_selections(Default::default(), window, cx, |s| {
 598                s.move_with(|map, selection| {
 599                    let point = if selection.is_empty() {
 600                        right(map, selection.head(), 1)
 601                    } else {
 602                        selection.end
 603                    };
 604                    selection.collapse_to(point, SelectionGoal::None);
 605                });
 606            });
 607        });
 608    }
 609
 610    pub fn helix_replace(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 611        self.update_editor(cx, |_, editor, cx| {
 612            editor.transact(window, cx, |editor, window, cx| {
 613                let display_map = editor.display_snapshot(cx);
 614                let selections = editor.selections.all_display(&display_map);
 615
 616                // Store selection info for positioning after edit
 617                let selection_info: Vec<_> = selections
 618                    .iter()
 619                    .map(|selection| {
 620                        let range = selection.range();
 621                        let start_offset = range.start.to_offset(&display_map, Bias::Left);
 622                        let end_offset = range.end.to_offset(&display_map, Bias::Left);
 623                        let was_empty = range.is_empty();
 624                        let was_reversed = selection.reversed;
 625                        (
 626                            display_map.buffer_snapshot().anchor_before(start_offset),
 627                            end_offset - start_offset,
 628                            was_empty,
 629                            was_reversed,
 630                        )
 631                    })
 632                    .collect();
 633
 634                let mut edits = Vec::new();
 635                for selection in &selections {
 636                    let mut range = selection.range();
 637
 638                    // For empty selections, extend to replace one character
 639                    if range.is_empty() {
 640                        range.end = movement::saturating_right(&display_map, range.start);
 641                    }
 642
 643                    let byte_range = range.start.to_offset(&display_map, Bias::Left)
 644                        ..range.end.to_offset(&display_map, Bias::Left);
 645
 646                    if !byte_range.is_empty() {
 647                        let replacement_text = text.repeat(byte_range.end - byte_range.start);
 648                        edits.push((byte_range, replacement_text));
 649                    }
 650                }
 651
 652                editor.edit(edits, cx);
 653
 654                // Restore selections based on original info
 655                let snapshot = editor.buffer().read(cx).snapshot(cx);
 656                let ranges: Vec<_> = selection_info
 657                    .into_iter()
 658                    .map(|(start_anchor, original_len, was_empty, was_reversed)| {
 659                        let start_point = start_anchor.to_point(&snapshot);
 660                        if was_empty {
 661                            // For cursor-only, collapse to start
 662                            start_point..start_point
 663                        } else {
 664                            // For selections, span the replaced text
 665                            let replacement_len = text.len() * original_len;
 666                            let end_offset = start_anchor.to_offset(&snapshot) + replacement_len;
 667                            let end_point = snapshot.offset_to_point(end_offset);
 668                            if was_reversed {
 669                                end_point..start_point
 670                            } else {
 671                                start_point..end_point
 672                            }
 673                        }
 674                    })
 675                    .collect();
 676
 677                editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 678                    s.select_ranges(ranges);
 679                });
 680            });
 681        });
 682        self.switch_mode(Mode::HelixNormal, true, window, cx);
 683    }
 684
 685    pub fn helix_goto_last_modification(
 686        &mut self,
 687        _: &HelixGotoLastModification,
 688        window: &mut Window,
 689        cx: &mut Context<Self>,
 690    ) {
 691        self.jump(".".into(), false, false, window, cx);
 692    }
 693
 694    pub fn helix_select_lines(
 695        &mut self,
 696        _: &HelixSelectLine,
 697        window: &mut Window,
 698        cx: &mut Context<Self>,
 699    ) {
 700        let count = Vim::take_count(cx).unwrap_or(1);
 701        self.update_editor(cx, |_, editor, cx| {
 702            editor.hide_mouse_cursor(HideMouseCursorOrigin::MovementAction, cx);
 703            let display_map = editor.display_map.update(cx, |map, cx| map.snapshot(cx));
 704            let mut selections = editor.selections.all::<Point>(&display_map);
 705            let max_point = display_map.buffer_snapshot().max_point();
 706            let buffer_snapshot = &display_map.buffer_snapshot();
 707
 708            for selection in &mut selections {
 709                // Start always goes to column 0 of the first selected line
 710                let start_row = selection.start.row;
 711                let current_end_row = selection.end.row;
 712
 713                // Check if cursor is on empty line by checking first character
 714                let line_start_offset = buffer_snapshot.point_to_offset(Point::new(start_row, 0));
 715                let first_char = buffer_snapshot.chars_at(line_start_offset).next();
 716                let extra_line = if first_char == Some('\n') { 1 } else { 0 };
 717
 718                let end_row = current_end_row + count as u32 + extra_line;
 719
 720                selection.start = Point::new(start_row, 0);
 721                selection.end = if end_row > max_point.row {
 722                    max_point
 723                } else {
 724                    Point::new(end_row, 0)
 725                };
 726                selection.reversed = false;
 727            }
 728
 729            editor.change_selections(Default::default(), window, cx, |s| {
 730                s.select(selections);
 731            });
 732        });
 733    }
 734
 735    fn helix_keep_newest_selection(
 736        &mut self,
 737        _: &HelixKeepNewestSelection,
 738        window: &mut Window,
 739        cx: &mut Context<Self>,
 740    ) {
 741        self.update_editor(cx, |_, editor, cx| {
 742            let newest = editor
 743                .selections
 744                .newest::<MultiBufferOffset>(&editor.display_snapshot(cx));
 745            editor.change_selections(Default::default(), window, cx, |s| s.select(vec![newest]));
 746        });
 747    }
 748
 749    fn do_helix_substitute(&mut self, yank: bool, window: &mut Window, cx: &mut Context<Self>) {
 750        self.update_editor(cx, |vim, editor, cx| {
 751            editor.set_clip_at_line_ends(false, cx);
 752            editor.transact(window, cx, |editor, window, cx| {
 753                editor.change_selections(SelectionEffects::no_scroll(), window, cx, |s| {
 754                    s.move_with(|map, selection| {
 755                        if selection.start == selection.end {
 756                            selection.end = movement::right(map, selection.end);
 757                        }
 758
 759                        // If the selection starts and ends on a newline, we exclude the last one.
 760                        if !selection.is_empty()
 761                            && selection.start.column() == 0
 762                            && selection.end.column() == 0
 763                        {
 764                            selection.end = movement::left(map, selection.end);
 765                        }
 766                    })
 767                });
 768                if yank {
 769                    vim.copy_selections_content(editor, MotionKind::Exclusive, window, cx);
 770                }
 771                let selections = editor
 772                    .selections
 773                    .all::<Point>(&editor.display_snapshot(cx))
 774                    .into_iter();
 775                let edits = selections.map(|selection| (selection.start..selection.end, ""));
 776                editor.edit(edits, cx);
 777            });
 778        });
 779        self.switch_mode(Mode::Insert, true, window, cx);
 780    }
 781
 782    fn helix_substitute(
 783        &mut self,
 784        _: &HelixSubstitute,
 785        window: &mut Window,
 786        cx: &mut Context<Self>,
 787    ) {
 788        self.do_helix_substitute(true, window, cx);
 789    }
 790
 791    fn helix_substitute_no_yank(
 792        &mut self,
 793        _: &HelixSubstituteNoYank,
 794        window: &mut Window,
 795        cx: &mut Context<Self>,
 796    ) {
 797        self.do_helix_substitute(false, window, cx);
 798    }
 799
 800    fn helix_select_next(
 801        &mut self,
 802        _: &HelixSelectNext,
 803        window: &mut Window,
 804        cx: &mut Context<Self>,
 805    ) {
 806        self.do_helix_select(Direction::Next, window, cx);
 807    }
 808
 809    fn helix_select_previous(
 810        &mut self,
 811        _: &HelixSelectPrevious,
 812        window: &mut Window,
 813        cx: &mut Context<Self>,
 814    ) {
 815        self.do_helix_select(Direction::Prev, window, cx);
 816    }
 817
 818    fn do_helix_select(
 819        &mut self,
 820        direction: searchable::Direction,
 821        window: &mut Window,
 822        cx: &mut Context<Self>,
 823    ) {
 824        let Some(pane) = self.pane(window, cx) else {
 825            return;
 826        };
 827        let count = Vim::take_count(cx).unwrap_or(1);
 828        Vim::take_forced_motion(cx);
 829        let prior_selections = self.editor_selections(window, cx);
 830
 831        let success = pane.update(cx, |pane, cx| {
 832            let Some(search_bar) = pane.toolbar().read(cx).item_of_type::<BufferSearchBar>() else {
 833                return false;
 834            };
 835            search_bar.update(cx, |search_bar, cx| {
 836                if !search_bar.has_active_match() || !search_bar.show(window, cx) {
 837                    return false;
 838                }
 839                search_bar.select_match(direction, count, window, cx);
 840                true
 841            })
 842        });
 843
 844        if !success {
 845            return;
 846        }
 847        if self.mode == Mode::HelixSelect {
 848            self.update_editor(cx, |_vim, editor, cx| {
 849                let snapshot = editor.snapshot(window, cx);
 850                editor.change_selections(SelectionEffects::default(), window, cx, |s| {
 851                    s.select_anchor_ranges(
 852                        prior_selections
 853                            .iter()
 854                            .cloned()
 855                            .chain(s.all_anchors(&snapshot).iter().map(|s| s.range())),
 856                    );
 857                })
 858            });
 859        }
 860    }
 861}
 862
 863#[cfg(test)]
 864mod test {
 865    use gpui::{UpdateGlobal, VisualTestContext};
 866    use indoc::indoc;
 867    use project::FakeFs;
 868    use search::{ProjectSearchView, project_search};
 869    use serde_json::json;
 870    use settings::SettingsStore;
 871    use util::path;
 872    use workspace::DeploySearch;
 873
 874    use crate::{VimAddon, state::Mode, test::VimTestContext};
 875
 876    #[gpui::test]
 877    async fn test_word_motions(cx: &mut gpui::TestAppContext) {
 878        let mut cx = VimTestContext::new(cx, true).await;
 879        cx.enable_helix();
 880        // «
 881        // ˇ
 882        // »
 883        cx.set_state(
 884            indoc! {"
 885            Th«e quiˇ»ck brown
 886            fox jumps over
 887            the lazy dog."},
 888            Mode::HelixNormal,
 889        );
 890
 891        cx.simulate_keystrokes("w");
 892
 893        cx.assert_state(
 894            indoc! {"
 895            The qu«ick ˇ»brown
 896            fox jumps over
 897            the lazy dog."},
 898            Mode::HelixNormal,
 899        );
 900
 901        cx.simulate_keystrokes("w");
 902
 903        cx.assert_state(
 904            indoc! {"
 905            The quick «brownˇ»
 906            fox jumps over
 907            the lazy dog."},
 908            Mode::HelixNormal,
 909        );
 910
 911        cx.simulate_keystrokes("2 b");
 912
 913        cx.assert_state(
 914            indoc! {"
 915            The «ˇquick »brown
 916            fox jumps over
 917            the lazy dog."},
 918            Mode::HelixNormal,
 919        );
 920
 921        cx.simulate_keystrokes("down e up");
 922
 923        cx.assert_state(
 924            indoc! {"
 925            The quicˇk brown
 926            fox jumps over
 927            the lazy dog."},
 928            Mode::HelixNormal,
 929        );
 930
 931        cx.set_state("aa\n  «ˇbb»", Mode::HelixNormal);
 932
 933        cx.simulate_keystroke("b");
 934
 935        cx.assert_state("aa\n«ˇ  »bb", Mode::HelixNormal);
 936    }
 937
 938    #[gpui::test]
 939    async fn test_delete(cx: &mut gpui::TestAppContext) {
 940        let mut cx = VimTestContext::new(cx, true).await;
 941        cx.enable_helix();
 942
 943        // test delete a selection
 944        cx.set_state(
 945            indoc! {"
 946            The qu«ick ˇ»brown
 947            fox jumps over
 948            the lazy dog."},
 949            Mode::HelixNormal,
 950        );
 951
 952        cx.simulate_keystrokes("d");
 953
 954        cx.assert_state(
 955            indoc! {"
 956            The quˇbrown
 957            fox jumps over
 958            the lazy dog."},
 959            Mode::HelixNormal,
 960        );
 961
 962        // test deleting a single character
 963        cx.simulate_keystrokes("d");
 964
 965        cx.assert_state(
 966            indoc! {"
 967            The quˇrown
 968            fox jumps over
 969            the lazy dog."},
 970            Mode::HelixNormal,
 971        );
 972    }
 973
 974    #[gpui::test]
 975    async fn test_delete_character_end_of_line(cx: &mut gpui::TestAppContext) {
 976        let mut cx = VimTestContext::new(cx, true).await;
 977
 978        cx.set_state(
 979            indoc! {"
 980            The quick brownˇ
 981            fox jumps over
 982            the lazy dog."},
 983            Mode::HelixNormal,
 984        );
 985
 986        cx.simulate_keystrokes("d");
 987
 988        cx.assert_state(
 989            indoc! {"
 990            The quick brownˇfox jumps over
 991            the lazy dog."},
 992            Mode::HelixNormal,
 993        );
 994    }
 995
 996    // #[gpui::test]
 997    // async fn test_delete_character_end_of_buffer(cx: &mut gpui::TestAppContext) {
 998    //     let mut cx = VimTestContext::new(cx, true).await;
 999
1000    //     cx.set_state(
1001    //         indoc! {"
1002    //         The quick brown
1003    //         fox jumps over
1004    //         the lazy dog.ˇ"},
1005    //         Mode::HelixNormal,
1006    //     );
1007
1008    //     cx.simulate_keystrokes("d");
1009
1010    //     cx.assert_state(
1011    //         indoc! {"
1012    //         The quick brown
1013    //         fox jumps over
1014    //         the lazy dog.ˇ"},
1015    //         Mode::HelixNormal,
1016    //     );
1017    // }
1018
1019    #[gpui::test]
1020    async fn test_f_and_t(cx: &mut gpui::TestAppContext) {
1021        let mut cx = VimTestContext::new(cx, true).await;
1022        cx.enable_helix();
1023
1024        cx.set_state(
1025            indoc! {"
1026            The quˇick brown
1027            fox jumps over
1028            the lazy dog."},
1029            Mode::HelixNormal,
1030        );
1031
1032        cx.simulate_keystrokes("f z");
1033
1034        cx.assert_state(
1035            indoc! {"
1036                The qu«ick brown
1037                fox jumps over
1038                the lazˇ»y dog."},
1039            Mode::HelixNormal,
1040        );
1041
1042        cx.simulate_keystrokes("F e F e");
1043
1044        cx.assert_state(
1045            indoc! {"
1046                The quick brown
1047                fox jumps ov«ˇer
1048                the» lazy dog."},
1049            Mode::HelixNormal,
1050        );
1051
1052        cx.simulate_keystrokes("e 2 F e");
1053
1054        cx.assert_state(
1055            indoc! {"
1056                Th«ˇe quick brown
1057                fox jumps over»
1058                the lazy dog."},
1059            Mode::HelixNormal,
1060        );
1061
1062        cx.simulate_keystrokes("t r t r");
1063
1064        cx.assert_state(
1065            indoc! {"
1066                The quick «brown
1067                fox jumps oveˇ»r
1068                the lazy dog."},
1069            Mode::HelixNormal,
1070        );
1071    }
1072
1073    #[gpui::test]
1074    async fn test_newline_char(cx: &mut gpui::TestAppContext) {
1075        let mut cx = VimTestContext::new(cx, true).await;
1076        cx.enable_helix();
1077
1078        cx.set_state("aa«\nˇ»bb cc", Mode::HelixNormal);
1079
1080        cx.simulate_keystroke("w");
1081
1082        cx.assert_state("aa\n«bb ˇ»cc", Mode::HelixNormal);
1083
1084        cx.set_state("aa«\nˇ»", Mode::HelixNormal);
1085
1086        cx.simulate_keystroke("b");
1087
1088        cx.assert_state("«ˇaa»\n", Mode::HelixNormal);
1089    }
1090
1091    #[gpui::test]
1092    async fn test_insert_selected(cx: &mut gpui::TestAppContext) {
1093        let mut cx = VimTestContext::new(cx, true).await;
1094        cx.enable_helix();
1095        cx.set_state(
1096            indoc! {"
1097            «The ˇ»quick brown
1098            fox jumps over
1099            the lazy dog."},
1100            Mode::HelixNormal,
1101        );
1102
1103        cx.simulate_keystrokes("i");
1104
1105        cx.assert_state(
1106            indoc! {"
1107            ˇThe quick brown
1108            fox jumps over
1109            the lazy dog."},
1110            Mode::Insert,
1111        );
1112    }
1113
1114    #[gpui::test]
1115    async fn test_append(cx: &mut gpui::TestAppContext) {
1116        let mut cx = VimTestContext::new(cx, true).await;
1117        cx.enable_helix();
1118        // test from the end of the selection
1119        cx.set_state(
1120            indoc! {"
1121            «Theˇ» quick brown
1122            fox jumps over
1123            the lazy dog."},
1124            Mode::HelixNormal,
1125        );
1126
1127        cx.simulate_keystrokes("a");
1128
1129        cx.assert_state(
1130            indoc! {"
1131            Theˇ quick brown
1132            fox jumps over
1133            the lazy dog."},
1134            Mode::Insert,
1135        );
1136
1137        // test from the beginning of the selection
1138        cx.set_state(
1139            indoc! {"
1140            «ˇThe» quick brown
1141            fox jumps over
1142            the lazy dog."},
1143            Mode::HelixNormal,
1144        );
1145
1146        cx.simulate_keystrokes("a");
1147
1148        cx.assert_state(
1149            indoc! {"
1150            Theˇ quick brown
1151            fox jumps over
1152            the lazy dog."},
1153            Mode::Insert,
1154        );
1155    }
1156
1157    #[gpui::test]
1158    async fn test_replace(cx: &mut gpui::TestAppContext) {
1159        let mut cx = VimTestContext::new(cx, true).await;
1160        cx.enable_helix();
1161
1162        // No selection (single character)
1163        cx.set_state("ˇaa", Mode::HelixNormal);
1164
1165        cx.simulate_keystrokes("r x");
1166
1167        cx.assert_state("ˇxa", Mode::HelixNormal);
1168
1169        // Cursor at the beginning
1170        cx.set_state("«ˇaa»", Mode::HelixNormal);
1171
1172        cx.simulate_keystrokes("r x");
1173
1174        cx.assert_state("«ˇxx»", Mode::HelixNormal);
1175
1176        // Cursor at the end
1177        cx.set_state("«aaˇ»", Mode::HelixNormal);
1178
1179        cx.simulate_keystrokes("r x");
1180
1181        cx.assert_state("«xxˇ»", Mode::HelixNormal);
1182    }
1183
1184    #[gpui::test]
1185    async fn test_helix_yank(cx: &mut gpui::TestAppContext) {
1186        let mut cx = VimTestContext::new(cx, true).await;
1187        cx.enable_helix();
1188
1189        // Test yanking current character with no selection
1190        cx.set_state("hello ˇworld", Mode::HelixNormal);
1191        cx.simulate_keystrokes("y");
1192
1193        // Test cursor remains at the same position after yanking single character
1194        cx.assert_state("hello ˇworld", Mode::HelixNormal);
1195        cx.shared_clipboard().assert_eq("w");
1196
1197        // Move cursor and yank another character
1198        cx.simulate_keystrokes("l");
1199        cx.simulate_keystrokes("y");
1200        cx.shared_clipboard().assert_eq("o");
1201
1202        // Test yanking with existing selection
1203        cx.set_state("hello «worlˇ»d", Mode::HelixNormal);
1204        cx.simulate_keystrokes("y");
1205        cx.shared_clipboard().assert_eq("worl");
1206        cx.assert_state("hello «worlˇ»d", Mode::HelixNormal);
1207
1208        // Test yanking in select mode character by character
1209        cx.set_state("hello ˇworld", Mode::HelixNormal);
1210        cx.simulate_keystroke("v");
1211        cx.assert_state("hello «wˇ»orld", Mode::HelixSelect);
1212        cx.simulate_keystroke("y");
1213        cx.assert_state("hello «wˇ»orld", Mode::HelixNormal);
1214        cx.shared_clipboard().assert_eq("w");
1215    }
1216
1217    #[gpui::test]
1218    async fn test_shift_r_paste(cx: &mut gpui::TestAppContext) {
1219        let mut cx = VimTestContext::new(cx, true).await;
1220        cx.enable_helix();
1221
1222        // First copy some text to clipboard
1223        cx.set_state("«hello worldˇ»", Mode::HelixNormal);
1224        cx.simulate_keystrokes("y");
1225
1226        // Test paste with shift-r on single cursor
1227        cx.set_state("foo ˇbar", Mode::HelixNormal);
1228        cx.simulate_keystrokes("shift-r");
1229
1230        cx.assert_state("foo hello worldˇbar", Mode::HelixNormal);
1231
1232        // Test paste with shift-r on selection
1233        cx.set_state("foo «barˇ» baz", Mode::HelixNormal);
1234        cx.simulate_keystrokes("shift-r");
1235
1236        cx.assert_state("foo hello worldˇ baz", Mode::HelixNormal);
1237    }
1238
1239    #[gpui::test]
1240    async fn test_helix_select_mode(cx: &mut gpui::TestAppContext) {
1241        let mut cx = VimTestContext::new(cx, true).await;
1242
1243        assert_eq!(cx.mode(), Mode::Normal);
1244        cx.enable_helix();
1245
1246        cx.simulate_keystrokes("v");
1247        assert_eq!(cx.mode(), Mode::HelixSelect);
1248        cx.simulate_keystrokes("escape");
1249        assert_eq!(cx.mode(), Mode::HelixNormal);
1250    }
1251
1252    #[gpui::test]
1253    async fn test_insert_mode_stickiness(cx: &mut gpui::TestAppContext) {
1254        let mut cx = VimTestContext::new(cx, true).await;
1255        cx.enable_helix();
1256
1257        // Make a modification at a specific location
1258        cx.set_state("ˇhello", Mode::HelixNormal);
1259        assert_eq!(cx.mode(), Mode::HelixNormal);
1260        cx.simulate_keystrokes("i");
1261        assert_eq!(cx.mode(), Mode::Insert);
1262        cx.simulate_keystrokes("escape");
1263        assert_eq!(cx.mode(), Mode::HelixNormal);
1264    }
1265
1266    #[gpui::test]
1267    async fn test_goto_last_modification(cx: &mut gpui::TestAppContext) {
1268        let mut cx = VimTestContext::new(cx, true).await;
1269        cx.enable_helix();
1270
1271        // Make a modification at a specific location
1272        cx.set_state("line one\nline ˇtwo\nline three", Mode::HelixNormal);
1273        cx.assert_state("line one\nline ˇtwo\nline three", Mode::HelixNormal);
1274        cx.simulate_keystrokes("i");
1275        cx.simulate_keystrokes("escape");
1276        cx.simulate_keystrokes("i");
1277        cx.simulate_keystrokes("m o d i f i e d space");
1278        cx.simulate_keystrokes("escape");
1279
1280        // TODO: this fails, because state is no longer helix
1281        cx.assert_state(
1282            "line one\nline modified ˇtwo\nline three",
1283            Mode::HelixNormal,
1284        );
1285
1286        // Move cursor away from the modification
1287        cx.simulate_keystrokes("up");
1288
1289        // Use "g ." to go back to last modification
1290        cx.simulate_keystrokes("g .");
1291
1292        // Verify we're back at the modification location and still in HelixNormal mode
1293        cx.assert_state(
1294            "line one\nline modifiedˇ two\nline three",
1295            Mode::HelixNormal,
1296        );
1297    }
1298
1299    #[gpui::test]
1300    async fn test_helix_select_lines(cx: &mut gpui::TestAppContext) {
1301        let mut cx = VimTestContext::new(cx, true).await;
1302        cx.set_state(
1303            "line one\nline ˇtwo\nline three\nline four",
1304            Mode::HelixNormal,
1305        );
1306        cx.simulate_keystrokes("2 x");
1307        cx.assert_state(
1308            "line one\n«line two\nline three\nˇ»line four",
1309            Mode::HelixNormal,
1310        );
1311
1312        // Test extending existing line selection
1313        cx.set_state(
1314            indoc! {"
1315            li«ˇne one
1316            li»ne two
1317            line three
1318            line four"},
1319            Mode::HelixNormal,
1320        );
1321        cx.simulate_keystrokes("x");
1322        cx.assert_state(
1323            indoc! {"
1324            «line one
1325            line two
1326            ˇ»line three
1327            line four"},
1328            Mode::HelixNormal,
1329        );
1330
1331        // Pressing x in empty line, select next line (because helix considers cursor a selection)
1332        cx.set_state(
1333            indoc! {"
1334            line one
1335            ˇ
1336            line three
1337            line four"},
1338            Mode::HelixNormal,
1339        );
1340        cx.simulate_keystrokes("x");
1341        cx.assert_state(
1342            indoc! {"
1343            line one
1344            «
1345            line three
1346            ˇ»line four"},
1347            Mode::HelixNormal,
1348        );
1349
1350        // Empty line with count selects extra + count lines
1351        cx.set_state(
1352            indoc! {"
1353            line one
1354            ˇ
1355            line three
1356            line four
1357            line five"},
1358            Mode::HelixNormal,
1359        );
1360        cx.simulate_keystrokes("2 x");
1361        cx.assert_state(
1362            indoc! {"
1363            line one
1364            «
1365            line three
1366            line four
1367            ˇ»line five"},
1368            Mode::HelixNormal,
1369        );
1370
1371        // Compare empty vs non-empty line behavior
1372        cx.set_state(
1373            indoc! {"
1374            ˇnon-empty line
1375            line two
1376            line three"},
1377            Mode::HelixNormal,
1378        );
1379        cx.simulate_keystrokes("x");
1380        cx.assert_state(
1381            indoc! {"
1382            «non-empty line
1383            ˇ»line two
1384            line three"},
1385            Mode::HelixNormal,
1386        );
1387
1388        // Same test but with empty line - should select one extra
1389        cx.set_state(
1390            indoc! {"
1391            ˇ
1392            line two
1393            line three"},
1394            Mode::HelixNormal,
1395        );
1396        cx.simulate_keystrokes("x");
1397        cx.assert_state(
1398            indoc! {"
1399            «
1400            line two
1401            ˇ»line three"},
1402            Mode::HelixNormal,
1403        );
1404
1405        // Test selecting multiple lines with count
1406        cx.set_state(
1407            indoc! {"
1408            ˇline one
1409            line two
1410            line threeˇ
1411            line four
1412            line five"},
1413            Mode::HelixNormal,
1414        );
1415        cx.simulate_keystrokes("x");
1416        cx.assert_state(
1417            indoc! {"
1418            «line one
1419            ˇ»line two
1420            «line three
1421            ˇ»line four
1422            line five"},
1423            Mode::HelixNormal,
1424        );
1425        cx.simulate_keystrokes("x");
1426        // Adjacent line selections stay separate (not merged)
1427        cx.assert_state(
1428            indoc! {"
1429            «line one
1430            line two
1431            ˇ»«line three
1432            line four
1433            ˇ»line five"},
1434            Mode::HelixNormal,
1435        );
1436    }
1437
1438    #[gpui::test]
1439    async fn test_helix_select_mode_motion(cx: &mut gpui::TestAppContext) {
1440        let mut cx = VimTestContext::new(cx, true).await;
1441
1442        assert_eq!(cx.mode(), Mode::Normal);
1443        cx.enable_helix();
1444
1445        cx.set_state("ˇhello", Mode::HelixNormal);
1446        cx.simulate_keystrokes("l v l l");
1447        cx.assert_state("h«ellˇ»o", Mode::HelixSelect);
1448    }
1449
1450    #[gpui::test]
1451    async fn test_helix_select_mode_motion_multiple_cursors(cx: &mut gpui::TestAppContext) {
1452        let mut cx = VimTestContext::new(cx, true).await;
1453
1454        assert_eq!(cx.mode(), Mode::Normal);
1455        cx.enable_helix();
1456
1457        // Start with multiple cursors (no selections)
1458        cx.set_state("ˇhello\nˇworld", Mode::HelixNormal);
1459
1460        // Enter select mode and move right twice
1461        cx.simulate_keystrokes("v l l");
1462
1463        // Each cursor should independently create and extend its own selection
1464        cx.assert_state("«helˇ»lo\n«worˇ»ld", Mode::HelixSelect);
1465    }
1466
1467    #[gpui::test]
1468    async fn test_helix_select_word_motions(cx: &mut gpui::TestAppContext) {
1469        let mut cx = VimTestContext::new(cx, true).await;
1470
1471        cx.set_state("ˇone two", Mode::Normal);
1472        cx.simulate_keystrokes("v w");
1473        cx.assert_state("«one tˇ»wo", Mode::Visual);
1474
1475        // In Vim, this selects "t". In helix selections stops just before "t"
1476
1477        cx.enable_helix();
1478        cx.set_state("ˇone two", Mode::HelixNormal);
1479        cx.simulate_keystrokes("v w");
1480        cx.assert_state("«one ˇ»two", Mode::HelixSelect);
1481    }
1482
1483    #[gpui::test]
1484    async fn test_exit_visual_mode(cx: &mut gpui::TestAppContext) {
1485        let mut cx = VimTestContext::new(cx, true).await;
1486
1487        cx.set_state("ˇone two", Mode::Normal);
1488        cx.simulate_keystrokes("v w");
1489        cx.assert_state("«one tˇ»wo", Mode::Visual);
1490        cx.simulate_keystrokes("escape");
1491        cx.assert_state("one ˇtwo", Mode::Normal);
1492
1493        cx.enable_helix();
1494        cx.set_state("ˇone two", Mode::HelixNormal);
1495        cx.simulate_keystrokes("v w");
1496        cx.assert_state("«one ˇ»two", Mode::HelixSelect);
1497        cx.simulate_keystrokes("escape");
1498        cx.assert_state("«one ˇ»two", Mode::HelixNormal);
1499    }
1500
1501    #[gpui::test]
1502    async fn test_helix_select_motion(cx: &mut gpui::TestAppContext) {
1503        let mut cx = VimTestContext::new(cx, true).await;
1504        cx.enable_helix();
1505
1506        cx.set_state("«ˇ»one two three", Mode::HelixSelect);
1507        cx.simulate_keystrokes("w");
1508        cx.assert_state("«one ˇ»two three", Mode::HelixSelect);
1509
1510        cx.set_state("«ˇ»one two three", Mode::HelixSelect);
1511        cx.simulate_keystrokes("e");
1512        cx.assert_state("«oneˇ» two three", Mode::HelixSelect);
1513    }
1514
1515    #[gpui::test]
1516    async fn test_helix_full_cursor_selection(cx: &mut gpui::TestAppContext) {
1517        let mut cx = VimTestContext::new(cx, true).await;
1518        cx.enable_helix();
1519
1520        cx.set_state("ˇone two three", Mode::HelixNormal);
1521        cx.simulate_keystrokes("l l v h h h");
1522        cx.assert_state("«ˇone» two three", Mode::HelixSelect);
1523    }
1524
1525    #[gpui::test]
1526    async fn test_helix_select_regex(cx: &mut gpui::TestAppContext) {
1527        let mut cx = VimTestContext::new(cx, true).await;
1528        cx.enable_helix();
1529
1530        cx.set_state("ˇone two one", Mode::HelixNormal);
1531        cx.simulate_keystrokes("x");
1532        cx.assert_state("«one two oneˇ»", Mode::HelixNormal);
1533        cx.simulate_keystrokes("s o n e");
1534        cx.run_until_parked();
1535        cx.simulate_keystrokes("enter");
1536        cx.assert_state("«oneˇ» two «oneˇ»", Mode::HelixNormal);
1537
1538        cx.simulate_keystrokes("x");
1539        cx.simulate_keystrokes("s");
1540        cx.run_until_parked();
1541        cx.simulate_keystrokes("enter");
1542        cx.assert_state("«oneˇ» two «oneˇ»", Mode::HelixNormal);
1543
1544        // TODO: change "search_in_selection" to not perform any search when in helix select mode with no selection
1545        // cx.set_state("ˇstuff one two one", Mode::HelixNormal);
1546        // cx.simulate_keystrokes("s o n e enter");
1547        // cx.assert_state("ˇstuff one two one", Mode::HelixNormal);
1548    }
1549
1550    #[gpui::test]
1551    async fn test_helix_select_next_match(cx: &mut gpui::TestAppContext) {
1552        let mut cx = VimTestContext::new(cx, true).await;
1553
1554        cx.set_state("ˇhello two one two one two one", Mode::Visual);
1555        cx.simulate_keystrokes("/ o n e");
1556        cx.simulate_keystrokes("enter");
1557        cx.simulate_keystrokes("n n");
1558        cx.assert_state("«hello two one two one two oˇ»ne", Mode::Visual);
1559
1560        cx.set_state("ˇhello two one two one two one", Mode::Normal);
1561        cx.simulate_keystrokes("/ o n e");
1562        cx.simulate_keystrokes("enter");
1563        cx.simulate_keystrokes("n n");
1564        cx.assert_state("hello two one two one two ˇone", Mode::Normal);
1565
1566        cx.set_state("ˇhello two one two one two one", Mode::Normal);
1567        cx.simulate_keystrokes("/ o n e");
1568        cx.simulate_keystrokes("enter");
1569        cx.simulate_keystrokes("n g n g n");
1570        cx.assert_state("hello two one two «one two oneˇ»", Mode::Visual);
1571
1572        cx.enable_helix();
1573
1574        cx.set_state("ˇhello two one two one two one", Mode::HelixNormal);
1575        cx.simulate_keystrokes("/ o n e");
1576        cx.simulate_keystrokes("enter");
1577        cx.simulate_keystrokes("n n");
1578        cx.assert_state("hello two one two one two «oneˇ»", Mode::HelixNormal);
1579
1580        cx.set_state("ˇhello two one two one two one", Mode::HelixSelect);
1581        cx.simulate_keystrokes("/ o n e");
1582        cx.simulate_keystrokes("enter");
1583        cx.simulate_keystrokes("n n");
1584        cx.assert_state("hello two «oneˇ» two «oneˇ» two «oneˇ»", Mode::HelixSelect);
1585    }
1586
1587    #[gpui::test]
1588    async fn test_helix_substitute(cx: &mut gpui::TestAppContext) {
1589        let mut cx = VimTestContext::new(cx, true).await;
1590
1591        cx.set_state("ˇone two", Mode::HelixNormal);
1592        cx.simulate_keystrokes("c");
1593        cx.assert_state("ˇne two", Mode::Insert);
1594
1595        cx.set_state("«oneˇ» two", Mode::HelixNormal);
1596        cx.simulate_keystrokes("c");
1597        cx.assert_state("ˇ two", Mode::Insert);
1598
1599        cx.set_state(
1600            indoc! {"
1601            oneˇ two
1602            three
1603            "},
1604            Mode::HelixNormal,
1605        );
1606        cx.simulate_keystrokes("x c");
1607        cx.assert_state(
1608            indoc! {"
1609            ˇ
1610            three
1611            "},
1612            Mode::Insert,
1613        );
1614
1615        cx.set_state(
1616            indoc! {"
1617            one twoˇ
1618            three
1619            "},
1620            Mode::HelixNormal,
1621        );
1622        cx.simulate_keystrokes("c");
1623        cx.assert_state(
1624            indoc! {"
1625            one twoˇthree
1626            "},
1627            Mode::Insert,
1628        );
1629
1630        // Helix doesn't set the cursor to the first non-blank one when
1631        // replacing lines: it uses language-dependent indent queries instead.
1632        cx.set_state(
1633            indoc! {"
1634            one two
1635            «    indented
1636            three not indentedˇ»
1637            "},
1638            Mode::HelixNormal,
1639        );
1640        cx.simulate_keystrokes("c");
1641        cx.set_state(
1642            indoc! {"
1643            one two
1644            ˇ
1645            "},
1646            Mode::Insert,
1647        );
1648    }
1649
1650    #[gpui::test]
1651    async fn test_g_l_end_of_line(cx: &mut gpui::TestAppContext) {
1652        let mut cx = VimTestContext::new(cx, true).await;
1653        cx.enable_helix();
1654
1655        // Test g l moves to last character, not after it
1656        cx.set_state("hello ˇworld!", Mode::HelixNormal);
1657        cx.simulate_keystrokes("g l");
1658        cx.assert_state("hello worldˇ!", Mode::HelixNormal);
1659
1660        // Test with Chinese characters, test if work with UTF-8?
1661        cx.set_state("ˇ你好世界", Mode::HelixNormal);
1662        cx.simulate_keystrokes("g l");
1663        cx.assert_state("你好世ˇ界", Mode::HelixNormal);
1664
1665        // Test with end of line
1666        cx.set_state("endˇ", Mode::HelixNormal);
1667        cx.simulate_keystrokes("g l");
1668        cx.assert_state("enˇd", Mode::HelixNormal);
1669
1670        // Test with empty line
1671        cx.set_state(
1672            indoc! {"
1673                hello
1674                ˇ
1675                world"},
1676            Mode::HelixNormal,
1677        );
1678        cx.simulate_keystrokes("g l");
1679        cx.assert_state(
1680            indoc! {"
1681                hello
1682                ˇ
1683                world"},
1684            Mode::HelixNormal,
1685        );
1686
1687        // Test with multiple lines
1688        cx.set_state(
1689            indoc! {"
1690                ˇfirst line
1691                second line
1692                third line"},
1693            Mode::HelixNormal,
1694        );
1695        cx.simulate_keystrokes("g l");
1696        cx.assert_state(
1697            indoc! {"
1698                first linˇe
1699                second line
1700                third line"},
1701            Mode::HelixNormal,
1702        );
1703    }
1704
1705    #[gpui::test]
1706    async fn test_project_search_opens_in_normal_mode(cx: &mut gpui::TestAppContext) {
1707        VimTestContext::init(cx);
1708
1709        let fs = FakeFs::new(cx.background_executor.clone());
1710        fs.insert_tree(
1711            path!("/dir"),
1712            json!({
1713                "file_a.rs": "// File A.",
1714                "file_b.rs": "// File B.",
1715            }),
1716        )
1717        .await;
1718
1719        let project = project::Project::test(fs.clone(), [path!("/dir").as_ref()], cx).await;
1720        let workspace =
1721            cx.add_window(|window, cx| workspace::Workspace::test_new(project.clone(), window, cx));
1722
1723        cx.update(|cx| {
1724            VimTestContext::init_keybindings(true, cx);
1725            SettingsStore::update_global(cx, |store, cx| {
1726                store.update_user_settings(cx, |store| store.helix_mode = Some(true));
1727            })
1728        });
1729
1730        let cx = &mut VisualTestContext::from_window(*workspace, cx);
1731
1732        workspace
1733            .update(cx, |workspace, window, cx| {
1734                ProjectSearchView::deploy_search(workspace, &DeploySearch::default(), window, cx)
1735            })
1736            .unwrap();
1737
1738        let search_view = workspace
1739            .update(cx, |workspace, _, cx| {
1740                workspace
1741                    .active_pane()
1742                    .read(cx)
1743                    .items()
1744                    .find_map(|item| item.downcast::<ProjectSearchView>())
1745                    .expect("Project search view should be active")
1746            })
1747            .unwrap();
1748
1749        project_search::perform_project_search(&search_view, "File A", cx);
1750
1751        search_view.update(cx, |search_view, cx| {
1752            let vim_mode = search_view
1753                .results_editor()
1754                .read(cx)
1755                .addon::<VimAddon>()
1756                .map(|addon| addon.entity.read(cx).mode);
1757
1758            assert_eq!(vim_mode, Some(Mode::HelixNormal));
1759        });
1760    }
1761
1762    #[gpui::test]
1763    async fn test_scroll_with_selection(cx: &mut gpui::TestAppContext) {
1764        let mut cx = VimTestContext::new(cx, true).await;
1765        cx.enable_helix();
1766
1767        // Start with a selection
1768        cx.set_state(
1769            indoc! {"
1770            «lineˇ» one
1771            line two
1772            line three
1773            line four
1774            line five"},
1775            Mode::HelixNormal,
1776        );
1777
1778        // Scroll down, selection should collapse
1779        cx.simulate_keystrokes("ctrl-d");
1780        cx.assert_state(
1781            indoc! {"
1782            line one
1783            line two
1784            line three
1785            line four
1786            line fiveˇ"},
1787            Mode::HelixNormal,
1788        );
1789
1790        // Make a new selection
1791        cx.simulate_keystroke("b");
1792        cx.assert_state(
1793            indoc! {"
1794            line one
1795            line two
1796            line three
1797            line four
1798            line «ˇfive»"},
1799            Mode::HelixNormal,
1800        );
1801
1802        // And scroll up, once again collapsing the selection.
1803        cx.simulate_keystroke("ctrl-u");
1804        cx.assert_state(
1805            indoc! {"
1806            line one
1807            line two
1808            line three
1809            line ˇfour
1810            line five"},
1811            Mode::HelixNormal,
1812        );
1813
1814        // Enter select mode
1815        cx.simulate_keystroke("v");
1816        cx.assert_state(
1817            indoc! {"
1818            line one
1819            line two
1820            line three
1821            line «fˇ»our
1822            line five"},
1823            Mode::HelixSelect,
1824        );
1825
1826        // And now the selection should be kept/expanded.
1827        cx.simulate_keystroke("ctrl-d");
1828        cx.assert_state(
1829            indoc! {"
1830            line one
1831            line two
1832            line three
1833            line «four
1834            line fiveˇ»"},
1835            Mode::HelixSelect,
1836        );
1837    }
1838}